Applying Williamson's model of human asset governance to the phenomena of unionization you would expect to observe:
a. Unions would be expected to be successful first among highly skilled and very firm- or job-specific employees because they possess more collective leverage due to their value and difficulty of replacement
b. Non firm-specific workers whose work is easily monitored will be organized relatively early because they have the most to gain by creating job protections
c. Workers with modestly specific skills but subject to dangerous work conditions will be relatively early to unionize in order to force more effective governance of safety factors
d. None of the above.